{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x35573c9e7c98ba7ebc31f73735cff30d3046a049ddbdb5db7c6afe855e48a9e4",
    "signature": "0xc8cc74ff3497efd7c11c9eab69304085db4cbb50d07af175cdfc7a7afcf86df6504dbb2226d9d9a0ec529a47b9126de2574062f813e88ed354f818a2b0e450881c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}