{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ee98388d81e0cd67af1351c60d24d51895487e70a45de854a2e820ce6cd4a26",
    "signature": "0x4f6a56bfbac277f43178da6eabffa86ae855fa42d721fb2c05741b72dbc9da6625281036afe61bc1bcbdf2c3ddc58186924b101cd28fcd40c6bbf2a93ee4b0e21b",
    "signer": "0x8d9C3422B8A78bf67B64E503D8d5bC1f316863Ff",
    "userId": "446019415"
  }
}