{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139146722",
    "entityType": "User",
    "nonce": "0x3f0f9c17f99f77b748a5ceaf16cd136162e45ae4868140f45bf7e55e6548fe11",
    "signature": "0x5595ecc56fef69db231ae52d8fa79e6e7be3ccc23d6731247e0afe1b748b216b55d8948c478f2632015f6127232c7046834dc856942334a634615c1ac06599d51b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}