{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x8549547f1b01ba4bb9eb7e9a486d039010bbb1497e105fd94f5c7a524c2bbe85",
    "signature": "0xe41292fe1ad2e6d4863b5aec94ea4fcf9cc2d76eb75f07622e79551ec88f422e423f56c927712ffe9d8ea9c1d839f92370afc2ee91181698c3f74cb0af4fef6e1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}