{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x03aae822c1b31a1896a6e768209cd9b86ffd149ad7aa64a3376f76105ce726f7",
    "signature": "0xb8a9f4e62a14e8e1d834820d28614a84729197a944b876c09ff125bf70605e0b2f432d5397a706900b9b309611608cd06e0ba3030f6023aeaea860355ecc6b431c",
    "signer": "0xEf3d3c6df875c67aa35e9F473e01a47D659c95f9",
    "userId": "814929010"
  }
}