{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0453e68e1e2a007b38a171ad8f82a9cbe5d612041a0df71fd0d98a1de8b31a79",
    "signature": "0x15b7cd4105131b23b8eb614fe64c1031d2b2a64f3f682e95d64edeb9c09a915a4bc87357116632b044f90681d2c5ca18d8319e7c35e221104b6a1f96eee6b9731c",
    "signer": "0xcBEfa88Fa365b5f3Fb8A75116D2be36F65EDEbd2",
    "userId": "908398457"
  }
}