{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xda855e86aee1b4e2ce41124d94842125b42e8840760e2c59cc9eaff2ce51eeaf",
    "signature": "0x51d129d297c173f9523a83e82b291583d6c5c06c37a7ebeacf6696af6716141073126b36e2bf9efa38deadf0de6c2d8206b7386c80099c5eb96892858db59cd21b",
    "signer": "0xA0660E978c394F58cEfAd6b8dc7b33Cf669d42c4",
    "userId": "234771215"
  }
}