{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53144",
    "entityType": "User",
    "nonce": "0x8ce4319689d6b3d70d4a1bd731bb5dbed4d9f1db40f2a1ae89569f75c01a5783",
    "signature": "0xa25a60f58b12629702b356cf55cedc34cbcbfdff6918dcf3699e1633eee4c8da36d159915d21fe6d593757c59d13e822975689dc6a6c09054f2a79ffcbb9e5a31c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}