{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0056d5dc6334a11ed64a60be91cb492fa8c7bb439539b90a9be66c861ba42b9d",
    "signature": "0xe340a9206d47e24c7886ac277268aee55e2cf6ed87e1d810d0b83086c6a9d89959a6bb1fb373f72e5f7bcc97bda126331cfe2ba5c22d4f0bc99a926a06c743161b",
    "signer": "0x6804E386aA5d5f4aEfad8bfb407d8d1b3676BD08",
    "userId": "670740644"
  }
}