{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3288a95674995cd83752ce124763214ade2e60c644d460a18725bedd84ef84c",
    "signature": "0xfdeea473ff5f37b506e93492bdeabdf962d125fa818f9c2f0326f564f2a83ec34d3dd1327e1ccbf738c49950a0fb9bb3e204ea88c901c69bc20102d4e6f844a81c",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}