{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64bbeeaf5a53be280b49066878f6f238c1a09085d89582cdb4b2820b1bb75ec3",
    "signature": "0x9b1e6cd12a929084c71213f4cd9462f876b4af357ad18f0b7c848acbbc0b374d44b767b8d4b616dfdc34a52bf2991ff3978348c529cd7b5033160645e08f44611b",
    "signer": "0x52C54744FeC93B156A460Db7FccF10e22b6FEdf0",
    "userId": "194963084"
  }
}