{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb269aa89c11cb548fa7835f5bea7567cbec4a1c3f64ff12803574ecbecbe79fe",
    "signature": "0xd5678269d60093c83a7fc4ad8b29e450d884bc01a18dc1dcb9fddcaa71c811234ee7424f3f31afb5d4adbf3e55f61fa9ad6e6fe78293fab27f13d1218b606b8e1c",
    "signer": "0xa76E94161B5aB18F804225D93D8dcAF60d2e7878",
    "userId": "622704108"
  }
}