{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "315121",
    "entityType": "User",
    "nonce": "0x34997b600fc6b3e5e2bd5551cdf6e90687bd715743507ccf52a7da4328d89059",
    "signature": "0xc98fcd0ba7f2e386d08687e08cd79e6511f10ff2fa730abb776409d48e789c5526fcb2a2dd357af41c845839f6409033203337f32ffab4fa7d47330bac33a8181c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}