{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f8086fa37b0d2deacfe49f93c0a8f0352cac56cffcd1a0177b3ccc3c9d20843",
    "signature": "0x503ab954cae3abe79e912be1abd2bcdac0750e6435bf0067278cc876f8c3fcf763cc035409e678387404fc9473c42275db27386cd89f49f12062c048b30ae7a41b",
    "signer": "0x9e083fCC2685013Dee22A8E890b1Cf85627a14ff",
    "userId": "306742400"
  }
}