{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xbefbf5ade52f6106251d3ecf4b6fba4d6fe58326a9de4d372d6d55fbeb3e1bfe",
    "signature": "0xae3c220eeae7a3aabcfaec4d11dea9bbeb046993e5964dab1bf7ba9d3cd915c50e4c6746fd7ed915c40853ed198d9b3d75d7aa86712cc0e1c55aa9b693f1cd921c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}