{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x87007e03806258359f62ce0f3d1e4304bfac838fc86e9e0dc9d78a4c1ca71f96",
    "signature": "0xaa07d05d1b1f5148a4f72d29b7d0a03ce50b9c0caa3bef20e1d8b9994bb282cd1533eb2b5ed809a5a7ddae5b0769de4360bd596105228040979f28eb31773a361b",
    "signer": "0xb7064d95A38c94e9883e3D32d96E879E8fd4272e",
    "userId": "151924512"
  }
}