{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e61f96f98e3db937d13c5b091c1aabe8bf6eeb4db4573d172c7660220acf597",
    "signature": "0xa9e343a1a6c243b3c3cb8ebec5a56baf9d6909860474f9dd4ea9026b60edaa5a450eac8c9dbaebc576a196bdfa957fc3e5f6ff7a0bd0c8a3f3cafaa3370e09d21b",
    "signer": "0xE4B27265C4e731793CE9C2F19de593ebF7B65457",
    "userId": "649332729"
  }
}