{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138628",
    "entityType": "User",
    "nonce": "0x14cdf94afd71232a469b6e572731e34925a7dd49b86308ea44402a9eb6d5ec46",
    "signature": "0x37db1adda3e6e34b95ab0a9ffa8ae3294584f664532b519e57f818400227b41b7c7765331e5a9e964a7e0c4d34ac88e83fcecf41c279bc3ed6038c03daeb93db1c",
    "signer": "0x4013D1dCdA06DC781615451200c459B1d75ad819",
    "userId": "531747098"
  }
}