{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42809",
    "entityType": "User",
    "nonce": "0x2a16503322e6843ed6cd392b4aafaa36650b169a810bba2f795ca094dd7e2ba2",
    "signature": "0x460080846a5bb45407517b2854600b558fbeef33193be52bc020e614df9daabb3f38e39decbfe39aeaddb9009ba95a2381db12f5e288b78658b8fac70229db001c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}