{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "910778788",
    "entityType": "User",
    "nonce": "0x9413e352403701708324c14c016088ae65c1cf6005010e1721aeb4473555a6b5",
    "signature": "0xa5e3c837e905b5b39b00860a09c21260f5955e47e3583cb61260a3457f37cfb17f08a78ae9bdf7fa55f425de2a9737726861ec62c44c0619523cc19c916fc1891c",
    "signer": "0x75eA2a1dcFE3beE2Fe075b2603B8DEBeE3C59c88",
    "userId": "785302566"
  }
}