{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "625268953",
    "entityType": "User",
    "nonce": "0xa12f50dcf0708e382f71edb3a95f3c3217f0931798a9419b7f571d616b293ac8",
    "signature": "0x925bf6766265e742402cd9fb8b8f5afa8fe27a1d9b8e5f78f1d4d94efdc202a647c865cd9bdb116db70af9e3818d135551a72ce590969e56faaaddbddc852bc71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}