{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x9f2ac33f264bf8949e74630a129c4fa28c928b9c4c04543ab0612016155d3460",
    "signature": "0x783f48bfc97fdbb2854f3a877ecceb0ad4445fecf8e6927f7d396b33b38e323c592edb2adc93c17751a4988aa391bdeeb1c7d56656e4b0ae05fcd609143969461b",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}