{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd85a3fedb0f805d12ab1a4473f4377537b6804d09dd3d908e17eef826a135bed",
    "signature": "0x16d81a537b97a5524bbd7cbdd9dd4b33938e4dd26949096043d21aa70477ba281b7eacefb7c9b071c0f79be637ea441344a20c37df688df29cf8095898e4faa31c",
    "signer": "0xe3921B88207E6D5BF6f86f1245645Cf17A2BE8c4",
    "userId": "472933117"
  }
}