{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222578",
    "entityType": "User",
    "nonce": "0x74545e0b053b2cc57aba9d9e1805cc9d8e418db34cc8ea4cbfecc4963acc7acf",
    "signature": "0xb4ab0901cdbca5a78bf32ff6cff828fbcd4b1ff51a7883590caa97ed75c542fa0f3ef025472dd799fe2a7498786af24c2854d6e0026e2c3f30219bae329b57471c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}