{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5f29032d67e5ee581758e7b932032b9836647e6b97becc408475b5078f2b0cdb",
    "signature": "0xffca63566cc359f7c94ac285edf0b5cffa2e6ba442f5328bf371230401ef28fb5440d57ee3a78e126561fbd9c5fc21f28e8533b6e54e04c869213136cae5b2601c",
    "signer": "0xe862752d5754CA4034035D0c731bA7De15D49Ff5",
    "userId": "108308523"
  }
}