{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x94eb77b8944484f3cea409416b7c54deac9bf423c52bb3b25f8ddadf6373dab9",
    "signature": "0x0e7b762d44b62f459adbfb0f3cabcb10cb7bd9f35be3306bfbab95ebcfde983046a3b1948305228d5105feb186657efc04809e221b2baf4f018c489d2bafd4451b",
    "signer": "0x1E8B7cd42473D60390bad346469b0f83F9478293",
    "userId": "43245458"
  }
}