{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297007",
    "entityType": "User",
    "nonce": "0xc35be66db94fe50f129bc9806c38f26e05a7577ccb9fda07e35824eed36aed1f",
    "signature": "0x5f8bf7f1f1858fcc4ed8c31c00c22e32e0f0d0bac7c73f84666f316a0f7c45c70f0ee6b15d9957195c058bb2fa25d7fc7a2516deaec29ba5561f9914d41215631c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}