{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a7d4f4c6a857a51c89a9ead7f46e50a3942408e09737acbbf477e1f76e6094e",
    "signature": "0x2ec55deb7a63e2d6ce463b2e766dab67a9bed483368653ae3ab97dfd4ce988d07a4aedd3ca2927359579094cf9e9de1baa2c315a4b0bde1f49660448f26377ae1c",
    "signer": "0xE8Ec1bAC66ca573950B30a9B5Bff2793f9CC5C29",
    "userId": "734516636"
  }
}