{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537944538",
    "entityType": "User",
    "nonce": "0x5316e85452f38bb8c8d0717536e7633312d04cb4260bf8b8225bdc4e87ad2140",
    "signature": "0xd764e41179a592b98b66cd17f37be92ce8930cc5e309eb108be7631a57bf1dde76614e24ca0266b6faac3b8b322187fa92849d1d7877ea0bfc471ba166ad2b191b",
    "signer": "0xc5feD1872BC05Ec03aF299E6A4B8B81D9d531925",
    "userId": "599834673"
  }
}