{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0x68df5f48215f10d9cd742714253fb2420cb482b9a5deabfd89e6a4593daedb0c",
    "signature": "0x11c30e0dc96bffb67c1e70fce2e5dcf2818dbab17efe9a956e2b2788499d212c4cad027c4c922026b77f8403b28d7c07bf2c53348e09a3960e1685261e7456841b",
    "signer": "0xd2034C6636b4261c48403302a162304227a2BBFd",
    "userId": "39985301"
  }
}