{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "787100055",
    "entityType": "User",
    "nonce": "0x73d3f6411f3886a81b691d37436d3e7edf6998d4a2bb2bd506f3e4fefd921567",
    "signature": "0x8ea1a7d11ee94287a74fe2b358fbc42fb60499661b6381f11bde9079ee9ca6b80ebf0effd4d5f8ac73dd16d9520dfe0c7f7513fada51b092315285c1af1f266b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}