{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "977045581",
    "entityType": "User",
    "nonce": "0xdcfed5016c20760c5eec954df86b8e07d88fd8d4b851ed76822158cddd3c69d2",
    "signature": "0x6a04fe2436a1edec3153c4f0926955594da94e2f049282f129e9192fddc6b9a475cc35f19b05cdd1d19b59c563e42c7c5d1572c4fdaec713f0e10ab70f44445e1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}