{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x7916e9abedf7103779664350e0741f589ab25e9f70668a2e63a1b6ad82f4983f",
    "signature": "0xbc4340b83e406cde9793684c7258215c63d792b0541ca2a52d9f4cc2538a8dd15f1ce3f8a4eb274ed6cdc88cfc2a25ae0b75b52dbd3c1fb431cd676ebc646ab31c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}