{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "734369",
    "entityType": "User",
    "nonce": "0x0d7e6e20c2422480fbe1abda099619233cfc0828944bf22994b2a680ecf93ee2",
    "signature": "0x3dd1c0a926e416275bcb5692956beacb962919d590d5bcb08899e428261339ed6a392e206da5097fb50828a95a69ab5c27265c111136c28aafd8eb307df2c0d21b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}