{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145976",
    "entityType": "User",
    "nonce": "0xab9453179ee498932b5c04f54815733313c34a311206743c9a4119c894808bde",
    "signature": "0x78298cd8fda5426e4db1b106d4fa01f7a5cb8f7671f56453ee91b5db157610d869d81d02e53be8205b291ccd0c46f92c0a63bcdbc88408878942cfdb89dd89c01c",
    "signer": "0x764341232AB28643e8106bCF183A4cCc2fFfa6c3",
    "userId": "67250118"
  }
}