{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0xacf8375551d5904f6ef7e0c5d2d3ac6aadaf6f5801d24aab4710664c60481cc6",
    "signature": "0xc9c8bd74751464df246f403cb897a2959f8dd0009a5f2f0e7e2a46c6bb3af4026117760af7f794819d1e920a712f15b2863dd414a715189ff44e769dfdd7928d1c",
    "signer": "0x7cb3978D851aBbaD3373f09F31DF1ceA399d64B3",
    "userId": "860501393"
  }
}