{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x099021eeb56a9beae6685b383b68194931a99258df297c63fefab02fce7bfa66",
    "signature": "0x3c863fda3af59dd99adfa2afecaef8f8bd12b39852462097230b0b6ea2b2ea8b1a9703fb30a1883ab8f87dd96f374e12eb0c1d6b79323762052e4e5292b51c991c",
    "signer": "0x204048730EB95397F325488262707e2a96770CcD",
    "userId": "56531591"
  }
}