{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409129",
    "entityType": "User",
    "nonce": "0x04759f5f39a0d537b30d00ab4367943c914cae538e78243b239aafb9f0f299d7",
    "signature": "0xd56f8055e61efe3371f924daa1f10299fd8ab34c5f7dad6270d76dfe95569e4c00aa3aefd75a2fd4393119bc1feecda647b987f80fad91932e6136d7f7724ed61c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}