{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x3d98556ebda1d851875607728819fbe00064de61a4e08744118c637a5462e6d8",
    "signature": "0x116748a1257c08b7b69d367a972cce1cf808961683757fad0fd509a7d13f64dc1409b87029953cd9666ebb03158fc4e7c0fc01e823c8e3803ef9692312f83d521c",
    "signer": "0x3Ab8fF95DbFC0deFd15d4d27949f03d9fDd90404",
    "userId": "136466"
  }
}