{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345852",
    "entityType": "User",
    "nonce": "0x1ecbda8ec1853777eea47d3ebb7b1ee7304127f8e965ff37988fdd1a3d78ab9c",
    "signature": "0xf26b785b72b83df6e906a5f90db5fe3218f7c4ff91ace712a32c6a7c80f92be7111e34489fd5a32948b64b33d521839f7184eca83cf2ab5f8b7f744250dbcd961b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}