{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508263176",
    "entityType": "User",
    "nonce": "0xe3801006661f632dfc118a080fcc72b1ef9246bdae58fdf4d18d64ffe5161f22",
    "signature": "0x43ed5cd53e9d1b3a2b0e5cb83448e8120e2a885df223a9947d5f35fac508b64f04c9335bdb150190a50fa2552d6f3cea8ab8066225229ffde53529df78e48daf1c",
    "signer": "0x1A0e34aBD5374BDd677c5de4D5D9718089cB05Eb",
    "userId": "644286186"
  }
}