{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "276747",
    "entityType": "User",
    "nonce": "0x84a801d3614ad8d8bc17de91d083c3c939554d70ea20827cedad52e214b27723",
    "signature": "0xc5255937270eeedfd2e793bf26b849d95293de66766ed693cc693a034d029c507981f9bd54ef84a38991d27307d6c4e3f775490c7a680d193a605fa6ec6973f91c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}