{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa46ae16fb9cee4db0d7bba84c5dd759686a589c3d3d1980e965cdd11484a6d63",
    "signature": "0xd57cb45795510c6cb29c763ad21ad333fbcdbb8405476d2af6ddd11e9b68d8bc20e3220d474cec45caa5b1eb69ccbc1740d7bac62c36aea72e6960d9dd2279e11c",
    "signer": "0xD4Cafb7f9ca72Dc91b76b7a5f46778B5e9CF25C9",
    "userId": "656918811"
  }
}