{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "332490",
    "entityType": "User",
    "nonce": "0xb6774faa52bcb007c4a694af6ef02a5be64fbee54f20a878263e0166e8b43303",
    "signature": "0x9fc416ccfd007b478c74deeca9b362e338f753cdcdcc535494957aa023583a44736009ec83aedb6763fac2a3a8015fe741052af6b7ec029e6558e3297334ca051b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}