{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880706",
    "entityType": "User",
    "nonce": "0x28e9b4bd91e78bcbd08b96f1a0143633e0b867ea868649e82b839a78fca3aebb",
    "signature": "0xf88b87aabb358d5281c876cb31fad01468d5acc0960f893e1ef8908577434b7452d14e2107f62ea14bf3a2720a96d6510dac706e86889a08cf64881255171cff1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}