{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "747842",
    "entityType": "User",
    "nonce": "0x1e77bb57ffa95f2cd76f208c66b04ebf168a1054a050bc5dc9e85150c1017452",
    "signature": "0x46eabc0803d283a6374691126cee38ccc35ece6ef809415cc048b14a49e34e2d487b01391e63ba4ebf0425cf11102ef429fcb1fe55cb2359c92c727b6b4f17861c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}