{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d2431e21948e1ad56ccad3195540bc4aea1b3628563de015dfb4781acc5d5a7",
    "signature": "0xd770ae560158162fbce0aef6af70d13a20ba64754d1b5003f9f1f331f96962df6d73f399fdb126b27d1cc399abd73fafb125e5f2f4824499c5dd10272bc349781b",
    "signer": "0xD02168457d52060200662e77ACE4B88efbd8741c",
    "userId": "106269879"
  }
}