{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18272",
    "entityType": "User",
    "nonce": "0xd1c8b576ac1875d78425981b296478e765602c2d37403f816d23a5ce272b71c6",
    "signature": "0x7df944295b238735f0c30ca059e0da0c667d31482c6ebe14158699749eda1e5b2d6112449112130eeb8fe8f37289e5353681dfb5fa01eac36ae6f9a5f3adf4c81c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}