{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0x07bc886d0b3dd88a260895be625a9e40506995369a2350c3929a358a85733025",
    "signature": "0xa14c008d08088c7d085e4babaaec0c18b19db0ce893078ca67f92289325c89cb1eda75033855b2b753394587fbe695a42a700bc719d15a26fc642a318bcbe19e1b",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}