{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0x976c4fda566464160752950455c1b2a2f4123674f0f91357805e7faa61efc871",
    "signature": "0xf794055adfc781078915be734873a656a3ee04cc47ccc95aa11e926b86d338280baaf5aac894b6742a39c05b936ed1402fb8b1588ad076091afa910a2b952b401c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}