{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889450527",
    "entityType": "User",
    "nonce": "0xbf4ca3117c3bfdc2d2e6f559905c4ff6c2aa50a08978fdb6496ae0cb3ac2fc7d",
    "signature": "0x859929feffe965be3e74793690cd13b1fcfb7970ffea339f42c5b56ea0533c823fc941ec6a0b68eaf0dfb49bdc8a1b604a149f0f46303a22a5ee97323022d94e1c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}